CN115234466A - ABS hydraulic control module adopting plunger type electromagnetic pump - Google Patents

Abstract

The application provides an ABS hydraulic control module adopting a plunger type electromagnetic pump, and relates to the technical field of vehicle braking. The module includes a switching valve accumulator assembly and a solenoid pump assembly. The switch valve energy accumulator assembly body comprises a pressure-increasing switch valve, a pressure-reducing switch valve, an energy accumulator and a valve block, wherein the valve block comprises a master pump valve port, a wheel cylinder valve port, an assembly groove, a flow channel group, a pressure-increasing groove, a pressure-reducing groove and an energy-storing groove, the pressure-increasing switch valve is arranged in the pressure-increasing groove, the pressure-reducing switch valve is arranged in the pressure-reducing groove, and the energy accumulator is arranged in the energy-storing groove. The electromagnetic pump assembly comprises an electromagnetic pump coil and an electromagnetic pump main body, the electromagnetic pump main body is arranged in the assembly groove, the flow channel group is used for communicating the assembly groove with the master pump valve port, the wheel cylinder valve port, the pressurizing groove, the pressure reducing groove and the energy storage groove, and the electromagnetic pump coil is detachably connected with the electromagnetic pump main body. The module can effectively break through the limitation caused by motor driving through the matching of the switch valve energy accumulator assembly body and the electromagnetic pump assembly body, and is suitable for electric vehicles of more types.

Description

ABS hydraulic control module adopting plunger type electromagnetic pump

Technical Field

The application relates to the technical field of vehicle braking, in particular to an ABS (anti-lock brake system) hydraulic control module adopting a plunger type electromagnetic pump.

Background

And the brake anti-lock system is called ABS for short. The function is that when the vehicle brakes, the braking force of the brake is automatically controlled, so that the wheels are not locked and are in a state of rolling and sliding (the sliding rate is about 20 percent) to ensure that the adhesive force between the wheels and the ground is at the maximum. Structurally, the ABS can be roughly divided into a signal acquisition assembly, an electronic control unit and a hydraulic control module. The hydraulic control module is an actuating mechanism of the system, a hydraulic system in the hydraulic control module is a premise of ABS (anti-lock brake system) working, and the working pressure of a vehicle brake wheel cylinder can be adjusted under the control of the electronic control unit, so that the holding force of the brake caliper on the disc brake pad is adjusted. For ABS, the design of the hydraulic control module is an important part of its development work.

In the working process of the ABS, the brake fluid stored in the energy accumulator needs to be continuously conveyed back to the brake master cylinder, and the traditional ABS generally realizes the process in a mode that a motor is matched with a specific transmission mechanism to push a plunger pump. This configuration of motor driven plunger pumps has certain limitations. Especially for single-channel ABS, the pump structure has a large optimization space.

Disclosure of Invention

An object of the application is to provide an ABS hydraulic control module that adopts plunger type electromagnetic pump, it can improve the present ABS hydraulic control module and adopt the limitation that motor drive plunger pump exists to the more electric motor cars of different mains voltage of adaptation.

The embodiment of the application is realized as follows:

the embodiment of this application provides an ABS hydraulic control module who adopts plunger type electromagnetic pump, includes: the electromagnetic pump assembly comprises a switch valve energy accumulator assembly body and an electromagnetic pump assembly body;

the switch valve energy accumulator assembly body comprises a pressure-increasing switch valve, a pressure-reducing switch valve, an energy accumulator and a valve block, wherein the valve block comprises a main pump valve port, a wheel cylinder valve port, an assembly groove, a flow channel group, a pressure-increasing groove, a pressure-reducing groove and an energy-storing groove;

the electromagnetic pump assembly comprises an electromagnetic pump coil and an electromagnetic pump main body, the electromagnetic pump main body is arranged in the assembly groove, the flow channel group is used for communicating the assembly groove with the master pump valve port, the wheel cylinder valve port, the boosting groove, the pressure reducing groove and the energy storage groove, and the electromagnetic pump coil is detachably connected with the electromagnetic pump main body.

In addition, the ABS hydraulic control module using plunger type electromagnetic pump according to the embodiment of the present application may also have the following additional technical features:

in the optional embodiment of this application, the assembly groove includes first check valve groove, second check valve groove and mounting groove, first check valve groove with the second check valve groove sets up side by side and is located the mounting groove below, the electromagnetic pump main part includes inlet check valve, liquid outlet check valve and pump unit, the inlet check valve set up in first check valve inslot, the liquid outlet check valve sets up the second check valve inslot, the pump unit set up in the mounting groove.

In an alternative embodiment of the present application, the flow path group includes a first flow path, a second flow path, and a third flow path, the master pump valve port communicates with the first flow path, the second one-way valve port communicates with the first flow path, the pressure increasing tank communicates with the third flow path, the third flow path communicates with the wheel cylinder valve port, the pressure reducing tank communicates with the energy storing tank, the energy storing tank communicates with the second flow path, and the second flow path communicates with the first one-way valve port.

In the optional embodiment of this application, the pump unit includes plunger cylinder body, seal gasket, plunger, seal gasket set up in the inlet check valve the liquid outlet check valve top, seal gasket has first slotted hole, second slotted hole and central slotted hole, the play liquid end of inlet check valve loops through first slotted hole, central slotted hole with the second slotted hole with go out the inlet intercommunication of liquid check valve, the plunger cylinder body set up in the seal gasket upside, the plunger slidable ground is inserted and is located the plunger cylinder body, the lower extreme of plunger with the plunger cylinder body the cell wall of central slotted hole encloses into the compression chamber.

In the optional embodiment of this application, the pump unit still includes reset spring, supporting seat, movable iron, buffer spring and magnetism isolating pipe, the reset spring cover is located the plunger, the supporting seat set up in the plunger cylinder body just is located the plunger periphery, magnetism isolating pipe connect in the supporting seat just with the supporting seat encloses into the motion chamber, the movable iron set up in the motion intracavity and with the top of plunger supports and holds, buffer spring set up in inside just quilt of movable iron the movable iron with the roof internal surface of magnetism isolating pipe supports and holds, electromagnetic pump coil detachably cover is located magnetism isolating pipe periphery.

In an alternative embodiment of the application, the top wall of the moving iron is provided with a first balancing notch, the bottom wall of the moving iron is provided with a second balancing notch, and the parts of the motion cavity above and below the moving iron are communicated with the second balancing notch through the first balancing notch.

In the optional embodiment of this application, the plunger with first clearance has between the supporting seat, the plunger cylinder body with the second clearance has between the supporting seat, the edge of plunger cylinder body is equipped with the backward flow mouth, the valve block still is equipped with the backward flow way, first clearance the second clearance the backward flow mouth the backward flow way intercommunication forms the backward flow oil duct, the backward flow oil duct with the second flow way intercommunication.

In the optional embodiment of this application, the mounting groove includes from down upwards first step and the second step that sets gradually, the plunger cylinder body set up in first step, the electromagnetic pump coil set up in the second step.

In the optional embodiment of the application, the inner wall of the mounting groove, which is located above the second step, is provided with an inner concave part, and the inner concave parts are distributed in a central symmetry manner.

In an alternative embodiment of the present application, the electromagnetic pump assembly further comprises a limit mounting unit, the limit mounting unit comprises a base plate, a clamping arm and an expansion bolt;

the clamping arm is connected to the edge of the substrate, the length direction of the clamping arm is perpendicular to the substrate, the clamping arm is made of elastic materials, a screw hole is formed in the clamping arm along the length direction, and when the expansion bolt is not connected to the screw hole, the aperture of the screw hole is smaller than the rod diameter of the expansion bolt;

when the electromagnetic pump coil is fixed, the clamping arm is inserted into the concave part, the substrate abuts against the top of the electromagnetic pump coil, the expansion bolt is screwed into the screw hole to expand the clamping arm, and the clamping arm is clamped by the outer peripheral wall of the electromagnetic pump coil and the wall surface of the concave part;

when the electromagnetic pump coil is disassembled, the expansion bolt is screwed out, so that a gap is reserved between the clamping arm and the outer peripheral wall of the electromagnetic pump coil and the wall surface of the inner concave part, and the electromagnetic pump coil can be taken out from the mounting groove.

The beneficial effect of this application is:

the ABS hydraulic control module that adopts plunger type electromagnetic pump of this application passes through the cooperation of ooff valve energy storage ware assembly body and electromagnetic pump subassembly, can effectively break through the limitation that motor drive brought, the more types of electric motor car of adaptation.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a schematic diagram of an ABS hydraulic control module that employs a plunger-type solenoid pump as provided by an embodiment of the present application;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a partially enlarged view of a portion H of fig. 2;

FIG. 4 is a top view of FIG. 1;

FIG. 5 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 7 is an internal perspective schematic view of a valve block;

FIG. 8 is a schematic view of another perspective of the valve block;

FIG. 9 is a schematic view of a spacing mount unit;

fig. 10 is a hydraulic schematic of the brake.

Icon: 1000-ABS hydraulic control module using plunger type electromagnetic pump; 100-on-off valve accumulator assembly; 110-a boost on-off valve; 111-a pressure boost on-off valve body; 120-pressure reducing switch valve; 121-a pressure reducing switch valve body; 130-an accumulator; 131-an accumulator piston; 132-an accumulator spring; 133-accumulator shield cover; 134-O-shaped ring; 140-a valve block; 141-master cylinder valve port; 142-wheel cylinder valve port; 143-assembly grooves; 1431 — a first one-way valve spool; 1432-a second one-way valve spool; 1433-mounting groove; 14331 — first step; 14332 — a second step; 144-a flow channel group; 1441 — first flow path; 1442 — second flow path; 1443 — third flow path; 145-a pressurized tank; 146-a pressure relief trough; 147-an energy storage tank; 148-a concave inward portion; 149-sealing the steel ball; 160-switching valve coil; 200-an electromagnetic pump assembly; 210-an electromagnetic pump coil; 220-electromagnetic pump body; 221-liquid inlet one-way valve; 222-a port check valve; 2231-plunger cylinder; 2232-a sealing gasket; 22321-a first slot; 22322-a second slot; 22323-central slot; 2233-a plunger; 2234-a return spring; 2235-a support seat; 2236-moving iron; 22361-a first balancing notch; 22362-a second balancing slot; 2237-a buffer spring; 2238-a magnetism isolating tube; 201-a first gap; 202-a second gap; 203-reflux port; 204-a return channel; 300-a limit mounting unit; 310-a substrate; 320-a card arm; 321-screw holes; 330-expansion bolts; 1001-compression chamber; 1002-low pressure chamber; 2000-brake master cylinder; 3000-brake wheel cylinder.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the product conventionally places when used, and are only used for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Examples

Referring to fig. 1 to 9, an embodiment of the present application provides an ABS hydraulic control module 1000 using a plunger-type electromagnetic pump, including: a switching valve accumulator assembly 100 and a solenoid pump assembly 200;

the switch valve energy accumulator assembly 100 comprises a pressure increasing switch valve 110, a pressure reducing switch valve 120, an energy accumulator 130 and a valve block 140, wherein the valve block 140 comprises a main pump valve port 141, a wheel cylinder valve port 142, an assembly groove 143, a flow channel group 144, a pressure increasing groove 145, a pressure reducing groove 146 and an energy accumulating groove 147, the pressure increasing switch valve 110 is arranged in the pressure increasing groove 145, the pressure reducing switch valve 120 is arranged in the pressure reducing groove 146, and the energy accumulator 130 is arranged in the energy accumulating groove 147;

the electromagnetic pump assembly 200 comprises an electromagnetic pump coil 210 and an electromagnetic pump main body 220, the electromagnetic pump main body 220 is arranged in the assembly groove 143, the flow channel group 144 is used for communicating the assembly groove 143 with the master pump valve port 141, the wheel cylinder valve port 142, the pressure increasing groove 145, the pressure reducing groove 146 and the energy storage groove 147, and the electromagnetic pump coil 210 is detachably connected with the electromagnetic pump main body 220.

The master pump port 141 and the wheel cylinder port 142 are respectively used to connect the master brake pump 2000 and the wheel cylinder 3000 shown in fig. 10.

The corresponding components of the conventional ABS are used for assembling and forming the switch valve accumulator assembly 100 among the pressure-increasing switch valve 110, the pressure-reducing switch valve 120, the accumulator 130 and the valve block 140. Briefly, the pressure-increasing switching valve 110 has a pressure-increasing switching valve body 111, the pressure-reducing switching valve 120 has a pressure-reducing switching valve body 121, and each is provided with a switching valve coil 160, and the process holes of the valve block 140 are also sealed with a sealing steel ball 149. Accumulator 130 is comprised of accumulator piston 131, accumulator spring 132, accumulator retainer cap 133 and O-ring 134. For more specific structures and functions, reference may be made to corresponding structural schemes in the conventional ABS, and details are not repeated here.

Referring to fig. 7 and 8, the assembly groove 143 of the present embodiment includes a first check valve groove 1431, a second check valve groove 1432, and a mounting groove 1433, the first check valve groove 1431 and the second check valve groove 1432 are disposed side by side and located below the mounting groove 1433, the electromagnetic pump main body 220 includes a liquid inlet check valve 221, a liquid outlet check valve 222, and a pump unit, the liquid inlet check valve 221 is disposed in the first check valve groove 1431, the liquid outlet check valve 222 is disposed in the second check valve groove 1432, and the pump unit is disposed in the mounting groove 1433. This allows the inlet check valve 221 and the outlet check valve 222 to form a set of flow distribution check valves, and the solenoid pump assembly 200 is constructed as a valve type flow distribution solenoid pump. It needs to integrate inlet check valve 221 in plunger 2233 different from traditional electromagnetic pump to the structural style that inlet and outlet were arranged to the heteropleural side, this embodiment is through dividing the flow distribution check valve and plunger 2233 (the following is proposed) separation, and arrange in parallel in one side of plunger 2233 compression brake fluid, can make overall structure satisfy ABS's structural design demand, be convenient for assemble and make. In addition, based on the structural design, compared with the plunger 2233 in the general technology, the plunger 2233 is designed to have a smaller diameter, so that the pump pressure can be effectively increased, the brake fluid can flow more timely, and the accuracy of the hydraulic control can be improved to a certain extent due to timely response.

The assembly groove 143 of the present embodiment only needs to be grooved on one side of the valve block 140, and the overall structural components of the electromagnetic pump assembly 200 are fewer than those required by the conventional motor drive, and the size is smaller, which is more conducive to realizing the miniaturization of the ABS structure, so that the manufacturing difficulty and cost can be reduced, and the manufacturing difficulty and the assembly difficulty are both reduced, which is more beneficial to saving the production time and generally improving the production efficiency of enterprises.

Further, the flow path set 144 includes a first flow path 1441, a second flow path 1442, and a third flow path 1443, the master pump valve port 141 communicates with the first flow path 1441, the second one-way valve groove 1432 communicates with the first flow path 1441, the pressure increasing groove 145 communicates with the third flow path 1443, the third flow path 1443 communicates with the wheel cylinder valve port 142 and the pressure reducing groove 146, the pressure reducing groove 146 communicates with the energy storing groove 147, the energy storing groove 147 communicates with the second flow path 1442, and the second flow path 1442 communicates with the first one-way valve groove 1431.

The first flow passage 1441, the second flow passage 1442, and the third flow passage 1443 refer to a main passage through which brake fluid flows, and are not limited to these three flow passages. In addition, the communication and matching between each groove and the flow channel needs some branch flow channels to realize, and the branch flow channels can be checked from the figure, and are not described again here. Note that, in fig. 7, the first flow passage 1441, the second flow passage 1442, the third flow passage 1443, and the return passage 204 are highlighted by thick lines.

With further reference to fig. 2 and fig. 5, the pump unit includes a plunger cylinder 2231, a sealing gasket 2232, and a plunger 2233, the sealing gasket 2232 is disposed above the liquid inlet check valve 221 and the liquid outlet check valve 222, the sealing gasket 2232 has a first slot 22321, a second slot 22322, and a central slot 22323, a liquid outlet end of the liquid inlet check valve is communicated with a liquid inlet of the liquid outlet check valve sequentially through the first slot 22321, the central slot 22323, and the second slot 22322, the plunger cylinder 2231 is disposed on an upper side of the sealing gasket 2232, the plunger 2233 is slidably inserted into the plunger cylinder 2231, and a compression cavity 1001 is defined by a lower end of the plunger 2233 and walls of the plunger cylinder 2231 and the central slot 22323.

With reference to fig. 2, the pump unit of this embodiment further includes a return spring 2234, a support seat 2235, a moving iron 2236, a buffer spring 2237, and a magnetism isolating tube 2238, wherein the return spring 2234 is sleeved on the plunger 2233, the support seat 2235 is disposed on the plunger cylinder 2231 and located at the periphery of the plunger 2233, the magnetism isolating tube 2238 is connected to the support seat 2235 and encloses a movement cavity (also referred to as a low pressure cavity 1002 because of a lower pressure than the compression cavity 1001) with the support seat 2235, the moving iron 2236 is disposed in the movement cavity and abuts against the top of the plunger 2233, the buffer spring 2237 is disposed inside the moving iron 2236 and abuts against the inner surface of the top wall of the magnetism isolating tube 2238, and the electromagnetic pump coil 210 is detachably sleeved on the periphery of the magnetism isolating tube 2238.

The top wall of the moving iron 2236 is provided with a first balancing notch 22361, the bottom wall of the moving iron 2236 is provided with a second balancing notch 22362, and the portions of the moving cavity above and below the moving iron 2236 are communicated with the second balancing notch 22362 through the first balancing notch 22361. Thereby balancing the pressure on the upper and lower sides of the moving iron 2236 during movement and ensuring smooth movement of the plunger 2233.

In addition, the movable iron 2236 has lighter weight after being slotted, and the plunger 2233 can be made smaller in diameter and correspondingly reduced in weight, so that the corresponding speed of the movement of the movable iron 2236 and the plunger 2233 is faster, and the accuracy of hydraulic control is improved.

With further reference to fig. 6, a first gap 201 is formed between the plunger 2233 and the support seat 2235, a second gap 202 is formed between the plunger cylinder 2231 and the support seat 2235, a return port 203 (also shown in fig. 3) is formed at an edge of the plunger cylinder 2231, the valve block 140 is further provided with a return passage 204, and the first gap 201, the second gap 202, the return port 203, and the return passage 204 are communicated with each other to form a return oil passage, which is communicated with the second flow passage 1442.

The traditional plunger requires to be dynamically sealed with the plunger cylinder body, so that brake fluid is prevented from leaking between the plunger and the plunger cylinder body, and based on the design of the return oil channel, the embodiment allows a small amount of leakage between the plunger 2233 and the plunger cylinder body 2231, so that the sealing requirement is greatly reduced, and the use of sealing elements can be reduced. In addition, when the brake fluid leaks between the plunger 2233 and the plunger cylinder 2231 in a small amount, a lubricating effect can be formed, so that the plunger 2233 can be worn at a slower speed in the working process to a certain extent, and the service life can be prolonged. And after the brake fluid with a small amount of leakage flows to the low pressure cavity 1002, the brake fluid can finally return to the second flow passage 1442 through the oil return flow passage and circulate in the flow passage group 144 again, so that the whole ABS hydraulic control module 1000 adopting the plunger type electromagnetic pump has no external leakage.

The mounting groove 1433 includes a first step 14331 and a second step 14332 which are sequentially arranged from bottom to top, the plunger cylinder 2231 is arranged at the first step 14331, and the electromagnetic pump coil 210 is arranged at the second step 14332.

An inner concave part 148 is formed on the inner wall of the mounting groove 1433 above the second step 14332, and the plurality of inner concave parts 148 are distributed in a central symmetry manner. When the electromagnetic pump coil 210 is mounted, the outer peripheral wall of the electromagnetic pump coil 210 abuts against the inner wall surface above the second step 14332, the inner peripheral wall of the electromagnetic pump coil 210 can abut against the outer wall of the support base 2235 and the outer wall of the magnetism isolating pipe 2238, and the bottom wall of the electromagnetic pump coil 210 is placed on the step surface of the second step 14332. That is, the solenoid pump coil 210 can be completely mounted between the solenoid pump body 220 and the mounting groove 143 by means of snap-fitting. Since the installation groove 1433 is provided with the concave portion 148, when disassembling, the clamping tool can be inserted into the three concave portions 148, and clamps the solenoid pump coil 210 at the periphery thereof, and then pulls out the solenoid pump coil 210 upward. After the electromagnetic pump coil 210 of the desired specification is selected, the electromagnetic pump coil 210 may be pressed in and fixed between the pump unit and the inner wall of the mounting groove 1433 by reverse operation. The whole installation and disassembly process is very simple, when the electromagnetic pump coil 210 needs to be replaced, the time can be saved, the operation is easy, the requirement on the technical level of an operator is lower, and the electromagnetic pump coil replacement device is more suitable for popularization and application.

Through designing electromagnetic pump coil 210 and electromagnetic pump main part 220 into detachable disconnect-type structure, when changing the coil of different specifications, can obtain the electromagnetic pump subassembly 200 of different voltage specifications for this ABS hydraulic control module 1000 that adopts plunger type electromagnetic pump can cover the electric motor car of different mains voltage, has greatly improved the commonality of this product, can serve more electric motor car producers. And because can cover the electric motor car of more specifications, can reduce the input of equipment when producing, need not be for the special production line of designing ABS of different electric motor cars, through reduce cost, can be more favorable to the development of industry chain.

Referring to fig. 9, in order to improve the assembly stability of the electromagnetic pump coil 210, the electromagnetic pump assembly 200 of the present embodiment further includes a limit mounting unit 300.

Specifically, the limit mounting unit 300 includes a base plate 310, a clamp arm 320, and an expansion bolt 330;

the clamp arm 320 is connected to the edge of the substrate 310, the length direction of the clamp arm 320 is perpendicular to the substrate 310, the clamp arm 320 is made of elastic material, a screw hole 321 is formed in the clamp arm 320 along the length direction, and when the expansion bolt 330 is not connected to the screw hole 321, the aperture of the screw hole 321 is smaller than the rod diameter of the expansion bolt 330;

when the electromagnetic pump coil 210 is fixed, the clamp arm 320 is inserted into the concave portion 148, the substrate 310 abuts against the top of the electromagnetic pump coil 210, the expansion bolt 330 is screwed into the screw hole 321 and expands the clamp arm 320, and the clamp arm 320 is clamped by the outer peripheral wall of the electromagnetic pump coil 210 and the wall surface of the concave portion 148;

when the electromagnetic pump coil 210 is removed, the expansion bolt 330 is unscrewed, so that a gap is formed between the clamp arm 320 and the outer peripheral wall of the electromagnetic pump coil 210 and the wall surface of the inner concave portion 148, and the electromagnetic pump coil 210 can be taken out from the mounting groove 1433.

By designing the catch arm 320, the space of the concave portion 148 can be utilized, and the contact area between the electromagnetic pump coil 210 and the valve block 140 is increased equivalently. Further, the distribution of the stressed point positions when the electromagnetic pump coil 210 is limited is more uniform, the stress can be shared by the part which is increased to the upper part from the lower part of the basic peripheral wall and the inner wall of the installation groove 1433, and therefore when the ABS hydraulic control module 1000 adopting the plunger type electromagnetic pump works actually, the electromagnetic pump coil 210 is not easy to generate local fatigue due to the stress problem, and the stable working state is guaranteed.

The principle of the embodiment is as follows:

in the existing structural form of the motor-driven plunger pump, the limitations are mainly represented by larger volume, more components, shorter service life, slower response speed and external leakage at the plunger.

In view of the above, the present embodiment provides a new hydraulic control module driven by an electromagnetic pump, which fundamentally solves the overall problem caused by motor driving.

As shown in fig. 10, the master cylinder 2000 is connected to the valve block 140 through the master pump port 141 and may communicate with the pressure-increasing switching valve 110 through the first flow passage 1441, and the wheel cylinder 3000 is connected to the valve block 140 through the wheel cylinder port 142 and may communicate with the pressure-decreasing switching valve 120 and the accumulator 130 through the third flow passage 1443, and the accumulator 130 may further communicate with the inlet check valve 221 through the second flow passage 1442, so that the brake fluid flowing out of the accumulator 130 is sent to the compression chamber 1001.

After the electromagnetic pump coil 210 is powered on, the moving iron 2236 is attracted to the support seat 2235, and the plunger 2233 is driven by the moving iron 2236 to move downward, so that the brake fluid in the compression cavity 1001 can flow into the first flow passage 1441 from the fluid outlet check valve 222 and can return to the master cylinder 2000. When the solenoid pump coil 210 is de-energized, the plunger 2233 is reset by the return spring 2234 and a low pressure is created in the compression chamber 1001, and the inlet check valve 221 opens to allow for replenishment of the compression chamber 1001 due to the outlet check valve 222 being closed. The moving iron 2236 gradually decelerates, and avoids a large impact on the magnetism isolating tube 2238 under the action of the buffer spring 2237. In the process of power-on and power-off of the electromagnetic pump coil 210, brake fluid can be pumped according to the hydraulic control requirement.

Since the moving iron 2236 is driven by the electromagnetic pump coil 210 during pumping, its volume is smaller than that of the motor. Further, fewer parts are required, for example, more sealing members are not required to be specially provided for sealing between the plunger 2233 and the plunger cylinder 2231, and a slight amount of leakage is allowed between the plunger 2233 and the plunger cylinder 2231, so that the reduction of the parts can also play a role in reducing the volume.

The plunger 2233 also has a longer service life under the lubrication action of the trace amount of leaked brake fluid. In addition, the diameter of the plunger 2233 is reduced, and the movable iron 2236 is provided with a balance notch, so that the moving response of the movable iron 2236 and the plunger 2233 is faster, the diameter of the plunger 2233 is reduced, the pump pressure is higher, the pumping speed is faster, and the effect of sensitiveness to the hydraulic control of the ABS can be realized under the condition that the response speed and the pumping speed are both enhanced.

Thereby, the problems of the prior art are effectively overcome.

And the electromagnetic pump coil 210 more designs into the structure with electromagnetic pump main part 220 disconnect-type, can stabilize the joint when the assembly, also convenient dismantlement when dismantling, through the electromagnetic pump coil 210 of changing different specifications, can obtain the electromagnetic pump of different voltage specifications to make this ABS hydraulic control module 1000 that adopts plunger type electromagnetic pump can adapt the electric motor car of different mains voltage, the transformation cost when the wide and adaptation of range of application is extremely low, be suitable for actual popularization and application. Considering that some electric vehicles shake strongly in the use condition, the connection stability can be further enhanced by combining the limiting mounting unit 300, and the stable work of the whole ABS hydraulic control module 1000 adopting the plunger type electromagnetic pump can be ensured.

To sum up, the ABS hydraulic control module 1000 using the plunger-type electromagnetic pump of the present application can effectively break through the limitation caused by the driving of the motor through the cooperation of the switch valve accumulator assembly 100 and the electromagnetic pump assembly 200, and is adapted to electric vehicles of more types.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. An ABS hydraulic control module adopting a plunger type electromagnetic pump is characterized by comprising: the electromagnetic pump assembly comprises a switch valve energy accumulator assembly body and an electromagnetic pump assembly body;

the switch valve energy accumulator assembly body comprises a pressure-increasing switch valve, a pressure-reducing switch valve, an energy accumulator and a valve block, wherein the valve block comprises a master pump valve port, a wheel cylinder valve port, an assembly groove, a flow channel group, a pressure-increasing groove, a pressure-reducing groove and an energy-storing groove;

the electromagnetic pump assembly comprises an electromagnetic pump coil and an electromagnetic pump main body, the electromagnetic pump main body is arranged in the assembly groove, the flow channel group is used for communicating the assembly groove with the master pump valve port, the wheel cylinder valve port, the boosting groove, the pressure reducing groove and the energy storage groove, and the electromagnetic pump coil is detachably connected with the electromagnetic pump main body.

2. The ABS hydraulic control module with a plunger-type electromagnetic pump according to claim 1, wherein the assembly groove comprises a first check valve groove, a second check valve groove and a mounting groove, the first check valve groove and the second check valve groove are arranged side by side and located below the mounting groove, the electromagnetic pump main body comprises a liquid inlet check valve, a liquid outlet check valve and a pump unit, the liquid inlet check valve is arranged in the first check valve groove, the liquid outlet check valve is arranged in the second check valve groove, and the pump unit is arranged in the mounting groove.

3. The ABS hydraulic control module employing a plunger-type electromagnetic pump according to claim 2, wherein the flow passage set includes a first flow passage, a second flow passage, and a third flow passage, the master pump port communicates with the first flow passage, the second check valve groove communicates with the first flow passage, the pressure-increasing groove communicates with the third flow passage, the third flow passage communicates with the wheel cylinder port, the pressure-reducing groove communicates with the energy-accumulating groove, the energy-accumulating groove communicates with the second flow passage, and the second flow passage communicates with the first check valve groove.

4. The ABS hydraulic control module with the plunger-type electromagnetic pump according to claim 3, wherein the pump unit comprises a plunger cylinder, a sealing gasket and a plunger, the sealing gasket is arranged above the liquid inlet check valve and the liquid outlet check valve, the sealing gasket is provided with a first slotted hole, a second slotted hole and a central slotted hole, the liquid outlet end of the liquid inlet check valve is communicated with the liquid inlet of the liquid outlet check valve sequentially through the first slotted hole, the central slotted hole and the second slotted hole, the plunger cylinder is arranged on the upper side of the sealing gasket, the plunger is slidably inserted into the plunger cylinder, and the lower end of the plunger, the plunger cylinder and the slot wall of the central slotted hole form a compression cavity.

5. The ABS hydraulic control module with the plunger-type electromagnetic pump according to claim 4, wherein the pump unit further comprises a return spring, a support seat, a movable iron, a buffer spring and a magnetism isolating pipe, the return spring is sleeved on the plunger, the support seat is arranged on the plunger cylinder and located on the periphery of the plunger, the magnetism isolating pipe is connected to the support seat and encloses a movement cavity with the support seat, the movable iron is arranged in the movement cavity and abuts against the top of the plunger, the buffer spring is arranged inside the movable iron and abuts against the inner surface of the top wall of the magnetism isolating pipe by the movable iron, and the electromagnetic pump coil is detachably sleeved on the periphery of the magnetism isolating pipe.

6. The ABS hydraulic control module with a plunger-type electromagnetic pump according to claim 5, wherein the top wall of the moving iron is provided with a first balance notch, the bottom wall of the moving iron is provided with a second balance notch, and the parts of the moving cavity above and below the moving iron are communicated with the second balance notch through the first balance notch.

7. The ABS hydraulic control module with the plunger type electromagnetic pump according to claim 5, wherein a first gap is formed between the plunger and the support seat, a second gap is formed between the plunger cylinder and the support seat, a backflow port is formed in the edge of the plunger cylinder, the valve block is further provided with a backflow channel, and the first gap, the second gap, the backflow port and the backflow channel are communicated to form a backflow oil channel which is communicated with the second flow channel.

8. The ABS hydraulic control module with the plunger type electromagnetic pump according to claim 4, wherein the mounting groove comprises a first step and a second step which are arranged in sequence from bottom to top, the plunger cylinder is arranged on the first step, and the electromagnetic pump coil is arranged on the second step.

9. The ABS hydraulic control module with the plunger type electromagnetic pump according to claim 8, wherein the inner wall of the mounting groove above the second step is provided with an inner concave part, and the inner concave parts are distributed in a central symmetry manner.

10. The ABS hydraulic control module with plunger type electromagnetic pump according to claim 9, wherein the electromagnetic pump assembly further comprises a limit mounting unit, the limit mounting unit comprises a base plate, a clamping arm and an expansion bolt;

the clamping arm is connected to the edge of the substrate, the length direction of the clamping arm is perpendicular to the substrate, the clamping arm is made of elastic materials, a screw hole is formed in the clamping arm along the length direction, and when the expansion bolt is not connected to the screw hole, the aperture of the screw hole is smaller than the rod diameter of the expansion bolt;

when the electromagnetic pump coil is fixed, the clamping arm is inserted into the concave part, the substrate abuts against the top of the electromagnetic pump coil, the expansion bolt is screwed into the screw hole to expand the clamping arm, and the clamping arm is clamped by the outer peripheral wall of the electromagnetic pump coil and the wall surface of the concave part;

when the electromagnetic pump coil is disassembled, the expansion bolt is screwed out, so that a gap is reserved between the clamping arm and the outer peripheral wall of the electromagnetic pump coil and the wall surface of the inner concave part, and the electromagnetic pump coil can be taken out from the mounting groove.

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